If necessary, touch the bottom of the Home screen to expand the Applications panel.

Scroll to the All panel and tap the Options icon.

Scroll to and select Device.

Scroll to and select Software Updates.

The update can take up to two hours and the phone will be inoperable during the process. You will not be able to make or receive calls or text messages until the update is complete. Since the update can take up to two hours, it is recommended that you do not start this process until you can be without your phone for an extended period.

Update device software through your computer

You can update your device software through your computer, even if you have not received the Over the Air notification. To download or check for updates, refer to these documents: